Window-wiper.



- J."W. CAIN.

WINDOW WIPER. APPLICATON FILED OCT. 3, 19I4.

Patented 00T. 31,1916.

2 SHEETS-SHEET l.

z M2M/5555.'

- D STATES PATENT OFFICE.

-JOHN' W. GAIN, OF CHICAGO, ILLINOIS.

WINDOW-WIPER.

. in the forward ends of electric and other cars; to enable the motorman to maintain an unobstructed view through said window.

The object ofthis invention is to obtain a device of simple construction, which is effective in operation, not liable to break or get out of order, easily operi'ated, and actuated by compressed air or other gas under pressure.

In the drawings accompanying and formin a part of this specification Figure l is a ront elevation of a portion of ajcar front, and of this device in position thereon. Fig.

2 is a section on line 2 2 of Fig. l, viewed in the direction indicated by the arrows. Fig. '3 is an elevation, on 'an enlarged scale, of a portion of the tube and operative parts of the' device which are positioned on the left hand side of the illustratioh set forth in Fig. l. Figzd is a horizontal section of one of the tubes of the device, showing a portion of the framev and wiping element of the device in top plan View, on line 4-4 of Fig. 3, viewed in the direction indicated by the arrows. Figs. 5 and 6 are, respectively, front and rear views of an element of the base'of the wiping frame of the device. Fig. 7 is a horizontal section on line 7-7 of Fig. 8, viewed in the direction indi cated by the arrows; and Fig.`8 is an elevation of a guide and theup er end of a piston stem, forming elements ci) the device. Fig. 9 is a front elevation of a track shifting element which is positioned at thelower end of the track of the device. Fig. 10 is a side elevation of the parts Whichare illustrated in Fig. 9. Fig. 11 is a front elevation of a modification of the track shifting element of the device, and of a portion of the tube onv Which the same is mounted. Fig. 12 is a side elevation of the modification which is illustrated in Fig. 11.

A reference character applied to designate a given part indicates saidpart throughout the several figures of the drawing, wherever the same appears.

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application filed October 3, 1914. Serial No. 864,813.

A is a window sash, and ais the glass in sash A.

B is a portion of a front of a car.

C, C, are tubes or cylinders.

C1 is a head in cylinder C.

D is a piston in cylinder C, and l isthc stem to piston I). Head C1 is provided with a central aperture through which stein (Z extends, andmoves when piston D is moved longitudinally in said cylinder C.

E, E, are tubes or cylinders which are in axial alinenient with tubes or cylinders C;

Yand said cylinders C and E are illustrated as joined together. Tubes or cylinders C and E are rigidly attached to the front or' the car, as by lugs E1. n Y

e, are longitudinally'extending slots in tubes E.

e1 are tracks rigidly securedto tubes or cylinders E.

e2 is the side or face of a track, (Fig. 9) which is adjacent to the car window when the device is properly mounted on a car front, and on which face the roller (G), of the wiper framceleiuent of the device travels when said wiping element is moved upward.

FF1 is a' tongue or latch which is pivotally attached to the lower end of track e1, by means of pin or bolt f; and f1 is a spring yieldingly holding said tongue or latch in an advanced position. Part F1 of latch FF1 lis near to its extreme downward position.

H is a member' 'of the vwiper element of Ithe device and isv attached to the upper end of piston stem (l. Member H comprises the part z` which is positioned in cylinder C and is'provided with enlarged ends which fit loosely to the inside 'of the cylinderweb 71,1 which extends through the slot c, web 71.2, which is illustrated as rigidly secured to web 71,1, and the depending arm h3, which is illustrated as integral withweb h2.

I, I1, are rods which are secured in depending arms 7b3 of elements 'H, on opposite sides of the window to which the device is attached. Members H and rods I, I1, constitute what I term the wiper frame of the device.

J is the main part of the wiper which is mountedA on said wiper frame. and K are projects into the path of said downward ribs 'which are respectively rigidly attached to part J and pi votally mounted on rod I.

L is anl arm which depends from the ribs L, 'attached as described, tend to hold the wiper frame in position so that wiper element M is in contact with glassva.

Z is a cover tospring L, and is mounted on rod I. f y 'y M s the wiping element of the wiper,

and is mounted on the part J.

It will be observed that a rigid-frame is made by. elements H and rods I, Il, and that the wipinglelement M may be moved on to and away from contact with glass a, by means., of the pivotal attachment ofl abutments or ribs K to said rod I.'v lIn operating the device saidframe is moved up, as indicated by broken lines in said figure, and returned to its initial position, or permitted to remain in its raised position, at the option of the operator. The above named movement is obtained by moving the handle of 1 four way cock L1, 'so as to admit air, (or

other fluid) under pressure, to above or below the pistons D, as required to produce the desired movement of said parts.

In the downward movement of the wiper frame, when roller G comes in contact with part F1, of latch FP1, said latch -is forced to a retracted position, against the resiliency of spring y, and as said roller moves below said latch it is returned to its advanced position. On the upward movement of said wiper frame the roller G is brought into contact with the under side of said latch,

and is thereby forced on to face e2 of tracks el, and the` wiper frame is turned on rod I, against the resiliency of springs L, so that the wiping'- element is removed fromsaid glass a. As is illustrated in Fig. l, the roller G `iis-carried beyond the upper end \of said track e1 when the wiper frame is in its eXtreme upward position; and as said..

roller passes beyond said track the springs L return the-wiper frame to its normal position, with wiping element M in Contact rollerG and latch FF1 is illustrated. In

` this modification the roller is mounted on a longitudinally movable shaft, g, and is held in an advanced position, to.. engage with` track e1, byspring S; and 'latch FF1,.is replaced Aby the rigidly secured inclined track g longitudinally back, or into a retracted ,-position, asthe wiper `frame moves to its fextreme downward position. As said roller moves below track c1 it is lnoved to its advanced position by spring S, and when said wiper iframe .again moves upward the inclined under face t forces said roller Cr on to face e2 of track el, to move said wiper frame so that wiping element M is removed'from glass a.' C is the inlet of the upper'end'ofv the tube C and P is the inlet of the lower end of said tube.

Q are supply pipes'from four way cock vL1 to inlets O, and g are like pipes to inlet I).

R is the pipe for air, or other gas under pressure.

-Iart h of member H is byme termed a guide asv it maintains the upper end of piston stem d centrally located in the tubes 'C and E, and also holds said base in a determined position'relatively to said tubes E.

I claim:

ll In a window wiper, a constructionA compr1s1ng, 1n, combination, tubes respectively provided with longitudinally extend-- webs, said members and webs adapted to form bases, said additional webs respectively provided with depending ends having apertures therein, 'rods rigidly secured in said apertures, a window wiper loosely mounted on one of said rods, means to yieldingly hold said Wiper in a pre-determined position,means to retract it from said predetermined position, and means to move said construction fromone to the other end of said tube.

2. In a window Wiper, a construction comprising in combination, 'tubes respectively provided with longitudinally extending-slots, members in said tubes respectively provided with enlarged ends loosely fitting said tubes and with webs extending through Said slots, and frames comprising end members and side members, said side members rigidly secured to said end members, and

-said end members rigidly attached to the first named webs,` and a wiper pivotally mounted on said frame, means to yieldingly hold said wiper in an advanced position, means to retract said wiper from said advanced position, and means to move said construction from one to .the other end ofy said slots. 4

JOHN W. CAIN. .Signed in the presence of- .c

CHARLES TURNER BROWN,

CHARLES B. HEBRQN. 

